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00.029.0.01. Mastrevirus
Cite this publication as: ICTVdB Management (2006).
00.029.0.01. Mastrevirus. In: ICTVdB - The Universal Virus Database,
version 4. Büchen-Osmond, C. (Ed), Columbia University, New York, USA
Cite this site as: ICTVdB - The Universal Virus Database, version 4.
http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/
This is a description of a
plant virus at the genus level with data
on all virus properties from morphology to genome, replication, antigenicity and
biological properties.
ICTVdB Virus Code: 00.029.0.01. Virus accession number:
029001GE. Obsolete virus code: 29.0.1.; superceded accession number: 29010000.
NCBI Taxon Identifier NCBI Taxonomy ID:
10812.
Name, Synonyms and Lineage
Synonym(s): Subgroup
I geminivirus, Maize streak virus group; monogeminiviruses (VIDE). Virus is of
the family 00.029.
Geminiviridae.
Virions consist of a capsid. Virus capsid is not
enveloped. Capsid is elongated and exhibits icosahedral symmetry.
The capsid is geminate and has a diameter of
15-18.1-20 nm. Capsids appear hexagonal in outline. The capsomer
arrangement is clearly visible, or is not obvious. The capsid consists of 22
capsomers. With a length of 25-30-35 nm.
Electron micrograph of
Geminiviridae by R.G. Milne, Istituto di Virologia, CRN, Torino, Italy.
Electron microscopic preparation and references: Virus preparation
contains few virions, or many virions.
Virions have a buoyant density in CsCl of 1.35 g
cm-3. There are 1 sedimenting component(s) found in purified
preparations, or 2 sedimenting component(s) found in purified preparations. The
sedimentation coefficient is 70-74.6-76 S20w; of the
other(s) are 50-52-54 S20w.
A260/A280 ratio is 1.1-1.283-1.4. The thermal
inactivation point (TIP) is at 50-55-60°C. The longevity in
vitro (LIV) is 7-13.33-26 days. Although the titer is dependent on
the host, the decimal exponent (DEX) of the dilution end point is usually around
2-4. The infectivity is lost when deproteinized with proteases; retained
when deproteinized with phenol or detergent.
The Mr
of the genome constitutes 19-19.66-20% of the virion by weight. The
genome is not segmented and contains a single molecule of circular,
ambisense, single-stranded DNA that forms a closed
circle. Minor species of non-genomic nucleic acid are not found in virions.
The complete genome is 2672-2752-2900 nucleotides long, is
sequenced, complete sequence is about
2672-2752-2900 nucleotides long. The genome has a base ratio of
25.7-26.4-27.7 % guanine; 21.8-24.23-25.5 % adenine;
23.1-23.53-23.9 % cytosine; 24.8-26.06-28.1 % thymidine. The
genome has no intergenic poly (A) region.
GenBank records for
nucleotide sequences;
complete genome sequences.
Proteins
constitute about 80% of the particle weight.
The viral genome encodes structural proteins and non-structural proteins.
Virions consist of 1 structural protein(s).
Non-Structural Proteins: Virus-coded non-structural
proteins have been identified by sequence analysis and 1
non-structural protein(s) are found.
Lipids are not
reported.
Genome Organization and Replication
By
itself, genomic nucleic acid is not infectious.
Transcription: Sub-genomic RNA is
present in infected cells, or absent from infected cells.
Translation: The genome replicates in
the nucleus.
Natural Host
Domain
Viral hosts belong to the Domain
Eucarya.
Domain Eucarya
Kingdom Plantae.
Kingdom Plantae
Phylum Magnoliophyta
(Angiosperms, Class Liliopsida (Monocotyledonae).
Class Liliopsida (Monocotyledonae)
Subclass
COMMELINIDAE; Order Poales.
Severity and Occurrence of
Disease
Host: Signs and symptoms persist.
Virus is transmitted by a vector. Virus is transmitted by
mechanical inoculation, or not transmitted by mechanical inoculation;
transmitted by grafting, or not transmitted by grafting; not transmitted by
contact between hosts; transmitted by seeds, or not transmitted by seeds; not
transmitted by pollen.
Vector Transmission:
Virus is transmitted by arthropods, by insects
of the order Hemiptera, family Cicadellidae. Virus is transmitted in a
non-persistent manner, or in a semi-persistent manner, or in a
persistent manner; retained when the vector moults; does not replicate in the
vector; not transmitted congenitally to the progeny of the vector; does not
require a helper virus for vector transmission.
Experimental Hosts and Symptoms
Under
experimental conditions susceptibility to infection by virus is found in many
families, several families, few families. Susceptible host species are found in
the Family Chenopodiaceae, Compositae, Gramineae,
Leguminosae-Papilionoideae, Solanaceae. The following species
were susceptible to experimental virus infection: Aegilops cylindrica,
Aegilops triaristata, Aegilops triuncialis, Aegilops
umbellulata, Agropyron sibiricum, Agrostis gigantea,
Alopecurus pratensis, Andropogon gerardi, Avena
fatua, Avena sativa, Avena strigosa, Beta
vulgaris, Bothriochloa alta, Brachiaria eruciformis,
Brachiaria reptens, Bromus catharticus, Bromus
secalinus, Bromus uniloides, Calamagrostis canadensis,
Cenchrus argentina, Cenchrus cucullata, Cenchrus
echinatus, Cenchrus gayana, Cenchrus radiata,
Cenchrus submutica, Cenchrus virgata, Chloris gayana,
Cicer arietinum, Coix lacryma-jobi, Cymbopogon
distans, Cymbopogon schoenanthus, Cynodon dactylon,
Dactylis glomerata, Dactyloctenium aegyptium, Datura
stramonium, Datura tatula, Digitaria abyssinica,
Digitaria didactyla, Digitaria enantha, Digitaria
horizontalis, Digitaria longiflora, Digitaria marginata,
Digitaria milanjiana, Digitaria sanguinalis, Digitaria
setigera, Digitaria ternata, Digitaria velutina,
Echinochloa polystachya, Eleusine africana, Eleusine
coracana, Eleusine indica, Elytrigia repens,
Eragrostis abyssinica, Eragrostis aspera, Eragrostis
ciliaris, Eragrostis curvula, Eragrostis valida,
Euchlaena mexicana, Festuca arundinacea, Glyceria
fluitans, Heteropogon contortus, Holcus lanatus,
Hordeum vulgare, Hyparrhenia rufa, Imperata
arundinacea, Ixophorus unisetus, Lagurus ovatus,
Lens culinaris, Leptochloa filiformis, Leptochloa
virgata, Lolium multiflorum, Lolium perenne,
Lolium remotum, Lolium subulatum, Lolium temulentum,
Lycopersicon esculentum, Medicago sativa, Miscanthus
sacchariflorus, Nicotiana benthamiana, Nicotiana
glutinosa, Nicotiana rustica, Nicotiana tabacum,
Panicum bergii, Panicum coloratum, Panicum hallii,
Panicum maximum, Panicum miliaceum, Panicum texanum,
Panicum virgatum, Paspalum almum, Paspalum
conjugatum, Paspalum dilatatum, Paspalum notatum,
Paspalum scrobiculatum, Paspalum urvillei, Pennisetum
clandestinum, Pennisetum purpureum, Phaseolus vulgaris,
Pisum sativum, Poa annua, Rottboellia exaltata,
Saccharum, Saccharum officinarum, Schedonnardus
paniculatus, Schizachrium scoparium, Secale cereale,
Setaria chevalieri, Setaria faberi, Setaria homonyma,
Setaria italica, Setaria pallidifusca, Setaria
verticillata, Setaria viridis, Solanum nigrum,
Sonchus oleraceus, Sorghastrum nutans, Sorghum
bicolor, Sorghum sudanense, Trichachne californica,
Trichloris crinita, Trichloris pluriflora, Trifolium
repens, Triticum aestivum, Triticum durum,
Urochloa helopus, Urochloa panicoides, Urochloa
trichopus, Vaseyochloa multinervosa, Vicia faba,
Zea mays.
Experimentally infected insusceptible Hosts: Families
containing insusceptible hosts: Cucurbitaceae,
Gramineae, or
Leguminosae-Papilionoideae,
Solanaceae. Species inoculated with virus that do
not show signs of susceptibility: Agropyron cristatum, Agrostis
canina, Agrostis palustris, Agrostis stolonifera,
Agrostis tenuis, Alopecurus aequalis, Andropogon
hallii, Arachis hypogaea, Arrhenatherum elatius,
Bothriochloa barbinodis, Bouteloua gracilis, Bouteloua
hirsuta, Bromus carinatus, Bromus catharticus,
Bromus erectus, Bromus inermis, Bromus mollis,
Cajanus cajan, Cenchrus canterai, Cenchrus ciliaris,
Cenchrus distichophylla, Chloris gayana, Cucumis
sativus, Cynodon dactylon, Dactylis glomerata,
Dactyloctenium gigantea, Digitaria ciliaris, Digitaria
decumbens, Digitaria horizontalis, Digitaria valida,
Echinochloa colona, Echinochloa crus-galli, Elymus
canadensis, Elytrigia repens, Eremochloa ophiuroides,
Euchlaena perennis, Festuca ovina, Festuca pratensis,
Festuca rubra, Glycine max, Hordeum jubatum,
Leersia hexandra, Lolium multiflorum, Macroptilium
lathyroides, Medicago sativa, Microlaena stipoides,
Nicotiana debneyi, Nicotiana occidentalis, Nicotiana
rustica, Nicotiana tabacum, Panicum coloratum var.
Makarikari, Panicum maximum, Panicum miliaceum,
Paspalum dilatatum, Pennisetum americanum, Pennisetum
clandestinum, Pennisetum macrorum, Pennisetum typhoides,
Phalaris arundinacea, Phalaris tuberosa, Phleum
pratense, Poa compressa, Poa pratensis, Poa
trivialis, Saccharum officinarum, Setaria italica,
Setaria nigrirostris, Setaria sphacelata, Setaria
viridis, Solanum melongena, Solanum tuberosum,
Sorghum bicolor, Sorghum halepense, Sorghum
miliaceum, Sorghum propinguum, Sorghum vulgare,
Stenotaphrum secundatum, Tripsacum dactyloides, Vigna
radiata, Vigna unguiculata, Zea diploperennis, Zea
mays, Zea perennis.
Histopathology: Virions are found in the cytoplasm, or nucleus,
or cell vacuole.
Cytopathology: Inclusions are present in infected cells, or not
present in infected cells. Inclusion bodies in the host cell are found in the
cytoplasm, or nucleus. Nuclear inclusion bodies are crystals. Cytoplasmic
inclusions are viroplasma. Inclusions are typically in the formation of large
irregular sheets of virions regularly arranged in rows. Inclusions contain
mature virions.
Geographical distribution of the virus is probably
restricted. The virus spreads in Africa. The virus occurs in Australia, or
Benin, or Bulgaria, or Cape Verde, or Cote d'Ivoire, or Czechoslovakia (former),
or Egypt, or France, or Hungary, or India, or Japan, or Kenya, or Madagascar, or
Malawi, or Mauritius, or Mozambique, or Pakistan, or Reunion, or South Africa,
or Sudan, or the USSR (former), or Uganda, or Vanuatu, or Yemen, or Zimbabwe.
Type species 00.029.0.01.001.
Maize streak virus .
List of Species in the
Genus.
Tentative Species in the
Genus.
Data Sources and
Contributions
The description has been compiled from data in the
ICTV Report presented by Briddon RW, Markham PG.
The
following generic references are cited in the most recent ICTV Report.
PubMed References.
Taxon images: EM by Robert G. Milne. EM by Robert G. Milne. EM by Robert G. Milne. EM from IACR Rothamsted. EM by Robert G. Milne.